ScreenSafe helps protect your privacy in public by detecting unknown faces looking at your phone using on-device AI face detection. It works completely offline, requires no login, and never uploads camera data. Get instant vibration alerts when someone is watching your screen while checking messages, banking apps, emails, or other sensitive information. Built for commuters, travelers, students, and anyone who values privacy.

Hi Product Hunt! 👋 I'm Samarpak, the solo developer behind ScreenSafe. The idea came from something simple but frustrating: people constantly looking at my phone in public. Whether I was checking my bank balance, replying to WhatsApp messages, or viewing personal information, I realized how common shoulder surfing had become. I couldn't find an Android app that simply warned me when someone was looking at my screen, so I built one. ScreenSafe uses on-device AI face detection to detect unknown faces looking at your phone and instantly alerts you with a vibration. Everything runs locally on the device—no account, no cloud processing, and no camera data leaves your phone. I'd genuinely love your feedback: Would you use a feature like this? What situations would it be most useful in? What would you improve? Thanks for checking it out, and I'm happy to answer any questions!

the vibration alert actually kicked in when my coworker peeked over my shoulder during a demo, kinda caught off guard how well it picked up an angle i wasn't even noticing. offline only is a big plus for me too

@esilatjc6 Thanks so much for the feedback! We wanted ScreenSafe to act as an extra layer of awareness rather than replace common sense, so it's great to hear it caught something you hadn't noticed. And yes, keeping all processing offline was one of our biggest priorities for privacy.

ScreenSafe

Detect people looking at your phone with on-device

Detect people looking at your phone with on-device